(lectures 5-7) - Felsenstein/Kuhner lab
... smoothly as one reaches the boundary of the mine. This was assessed by testing the descendants of the plants in the lab, so these are almost certainly genetic clines. 16. (Example). Johnston and Selander (Science 144: 548-550 1964) studied geographical variation in house sparrows (Passer domesticus ...
... smoothly as one reaches the boundary of the mine. This was assessed by testing the descendants of the plants in the lab, so these are almost certainly genetic clines. 16. (Example). Johnston and Selander (Science 144: 548-550 1964) studied geographical variation in house sparrows (Passer domesticus ...
userfiles/153/my files/23_lecture_presentation?id=3697
... The first step in testing whether evolution is occurring in a population is to clarify what we mean by a population A population is a localized group of individuals capable of interbreeding and producing fertile offspring A gene pool consists of all the alleles for all loci in a population A ...
... The first step in testing whether evolution is occurring in a population is to clarify what we mean by a population A population is a localized group of individuals capable of interbreeding and producing fertile offspring A gene pool consists of all the alleles for all loci in a population A ...
View PDF - G3: Genes | Genomes | Genetics
... for high-throughput manipulation and analysis (Supporting Information, Table S1). In most cases during creation of the de novo ts alleles multiple candidates were frozen, sometimes up to 12 independent alleles. Although only a single allele was validated by linkage and included in the arrayed collec ...
... for high-throughput manipulation and analysis (Supporting Information, Table S1). In most cases during creation of the de novo ts alleles multiple candidates were frozen, sometimes up to 12 independent alleles. Although only a single allele was validated by linkage and included in the arrayed collec ...
Exploring the association between the 2
... SE = 0.49, Beta = 0.27, p = 0.026, R2 = 0.07). Importantly, the missingness across all four waves of data resulted in losing two (2) cases with the 2-repeat allele so all of these analyses (and the following one) were based on a sample size of N = 130, of which 6.2% had the 2-repeat allele. The seco ...
... SE = 0.49, Beta = 0.27, p = 0.026, R2 = 0.07). Importantly, the missingness across all four waves of data resulted in losing two (2) cases with the 2-repeat allele so all of these analyses (and the following one) were based on a sample size of N = 130, of which 6.2% had the 2-repeat allele. The seco ...
Adaptation – not by sweeps alone
... effect, are likely to evolve by the polygenic model. These conditions probably hold for most quantitative traits. By contrast, some traits are controlled by relatively few genes and this predisposes them to adaptation by selective sweeps. For example, the lactase persistence and Duffy-null mutations ...
... effect, are likely to evolve by the polygenic model. These conditions probably hold for most quantitative traits. By contrast, some traits are controlled by relatively few genes and this predisposes them to adaptation by selective sweeps. For example, the lactase persistence and Duffy-null mutations ...
Punnett squares #1 - Bonar Law Memorial
... What are the chances a child will have a square shape? ________ out of 4 OR _______% What are the chances a child will have a round shape? ________ out of 4 OR _______% ...
... What are the chances a child will have a square shape? ________ out of 4 OR _______% What are the chances a child will have a round shape? ________ out of 4 OR _______% ...
Chromosomal Basis of Inheritance
... 1. A man with hemophilia (a recessive, sex-linked condition) has a daughter of normal phenotype. She marries a man who is normal for the trait. • What is the probability that a daughter of this mating will be a ...
... 1. A man with hemophilia (a recessive, sex-linked condition) has a daughter of normal phenotype. She marries a man who is normal for the trait. • What is the probability that a daughter of this mating will be a ...
Exemplar
... there are more than two different alleles for the same gene. the different alleles for the same characteristic are at different positions. there are only two alleles for a particular gene. ...
... there are more than two different alleles for the same gene. the different alleles for the same characteristic are at different positions. there are only two alleles for a particular gene. ...
life sciences p2
... there are more than two different alleles for the same gene. the different alleles for the same characteristic are at different positions. there are only two alleles for a particular gene. ...
... there are more than two different alleles for the same gene. the different alleles for the same characteristic are at different positions. there are only two alleles for a particular gene. ...
A Multi-dimensional Coalescent Process Applied to Multi
... here require that these parameters remain constant. In particular, note that the assumption of constant allele frequencies implies some type of stabilizing force (e.g., balancing selection among allele dasses ). Consider a single locus for which a sampie of two gene copies isdrawn from the populatio ...
... here require that these parameters remain constant. In particular, note that the assumption of constant allele frequencies implies some type of stabilizing force (e.g., balancing selection among allele dasses ). Consider a single locus for which a sampie of two gene copies isdrawn from the populatio ...
MAINTENANCE OR LOSS OF GENETIC VARIATION UNDER
... relative proportions of regions of parameter space by simulation. A stable sexually antagonistic polymorphism is found in roughly 28% of the volume of the unit cube defined by 0 ≤ s, t, h ≤ 1. As suggested by Rice (1984), the opportunity for polymorphism increases with increasing dominance of the fe ...
... relative proportions of regions of parameter space by simulation. A stable sexually antagonistic polymorphism is found in roughly 28% of the volume of the unit cube defined by 0 ≤ s, t, h ≤ 1. As suggested by Rice (1984), the opportunity for polymorphism increases with increasing dominance of the fe ...
Genetic Worksheet #8
... bbrr. What is the genotype and phenotype of the F 1 generation? In the F 2 generation, what are the phenotypes: And what are the phenotypes among the offspring produced from crossing one of the F 1 pigs with a pig having the genotype BBRr? 9. A black, smooth guinea pig was mated with an albino, roug ...
... bbrr. What is the genotype and phenotype of the F 1 generation? In the F 2 generation, what are the phenotypes: And what are the phenotypes among the offspring produced from crossing one of the F 1 pigs with a pig having the genotype BBRr? 9. A black, smooth guinea pig was mated with an albino, roug ...
Passing It On #1
... Continue this process for each trait to see what alleles will be inherited by the baby. Be sure to record the genotype and phenotype for each trait. Once you have designed you new baby bug by completing your data table, you can pick out the necessary parts to build your new bug. Use toothpicks to ho ...
... Continue this process for each trait to see what alleles will be inherited by the baby. Be sure to record the genotype and phenotype for each trait. Once you have designed you new baby bug by completing your data table, you can pick out the necessary parts to build your new bug. Use toothpicks to ho ...
File
... If one chromosome of a person has an A rather than a G at a particular location, there are probably other particular base differences near the A Haplotypes from African, Asian, and European populations are being be ...
... If one chromosome of a person has an A rather than a G at a particular location, there are probably other particular base differences near the A Haplotypes from African, Asian, and European populations are being be ...
Genetic Problems
... of the two parent watermelon plants? 7. In pea plants, tall [T] is dominant over short [t]. If the offspring of a particular cross were 3,066 tall plants and 998 short plants, what were the genotypes of the parent plants? 8. Tall peas are dominant over dwarf peas. What would be the phenotype and gen ...
... of the two parent watermelon plants? 7. In pea plants, tall [T] is dominant over short [t]. If the offspring of a particular cross were 3,066 tall plants and 998 short plants, what were the genotypes of the parent plants? 8. Tall peas are dominant over dwarf peas. What would be the phenotype and gen ...
Pedigree Review Worksheet
... 7. How many children of individuals 4 and 5 have attached earlobes? ________________ 8. Can you be certain of the genotype of individual 5 in Figure 14–2? _______ Explain. ________________ __________________________________ 9. Predict the genotype and phenotype of individual 14 in Figure 14–2. _____ ...
... 7. How many children of individuals 4 and 5 have attached earlobes? ________________ 8. Can you be certain of the genotype of individual 5 in Figure 14–2? _______ Explain. ________________ __________________________________ 9. Predict the genotype and phenotype of individual 14 in Figure 14–2. _____ ...
CP Biology Chapter 11 notes
... a new allele. If the mutation happens in a cell that makes gametes – sperm or eggs – then the mutation can be passed on to offspring. Mutations increase the genetic variation in a gene pool. Recombination New combinations of alleles form during meiosis – the type of cell division that forms gametes. ...
... a new allele. If the mutation happens in a cell that makes gametes – sperm or eggs – then the mutation can be passed on to offspring. Mutations increase the genetic variation in a gene pool. Recombination New combinations of alleles form during meiosis – the type of cell division that forms gametes. ...
Punnett Squares and Pedigrees
... 2. How many children of individuals 4 and 5 have attached earlobes? ________________ 3. Can you be certain of the genotype of individual 5 in Figure 14–2? _______ Explain. ________________ __________________________________ 4. Predict the genotype and phenotype of individual 14 in Figure 14–2. _____ ...
... 2. How many children of individuals 4 and 5 have attached earlobes? ________________ 3. Can you be certain of the genotype of individual 5 in Figure 14–2? _______ Explain. ________________ __________________________________ 4. Predict the genotype and phenotype of individual 14 in Figure 14–2. _____ ...
Chapter 15 Reading Guide - Student
... 23. What does the principle of Hardy-Weinberg equilibrium describe and what conditions must exist for a population to be in Hardy-Weinberg equilibrium. ...
... 23. What does the principle of Hardy-Weinberg equilibrium describe and what conditions must exist for a population to be in Hardy-Weinberg equilibrium. ...
7.1 Chromosomes and Phenotype
... – What are the patterns of sex-linked traits? – How are Mendel’s observations related to genes on autosomes? – Why are males more likely than females to have sex-linked genetic disorders? – How are autosomal traits, including recessive genetic disorders that are carried in a population, related to M ...
... – What are the patterns of sex-linked traits? – How are Mendel’s observations related to genes on autosomes? – Why are males more likely than females to have sex-linked genetic disorders? – How are autosomal traits, including recessive genetic disorders that are carried in a population, related to M ...
Slide 1
... ·Conduct a class survey to identify the frequency of each trait within the class (Table 4). ...
... ·Conduct a class survey to identify the frequency of each trait within the class (Table 4). ...
Dominance (genetics)
Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive. For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics. Often the dominant allele codes for a functional protein whereas the recessive allele does not.A classic example of dominance is the inheritance of seed shape, for example a pea shape in peas. Peas may be round, associated with allele R or wrinkled, associated with allele r. In this case, three combinations of alleles (genotypes) are possible: RR, Rr, and rr. The RR individuals have round peas and the rr individuals have wrinkled peas. In Rr individuals the R allele masks the presence of the r allele, so these individuals also have round peas. Thus, allele R is dominant to allele r, and allele r is recessive to allele R. This use of upper case letters for dominant alleles and lower caseones for recessive alleles is a widely followed convention.More generally, where a gene exists in two allelic versions (designated A and a), three combinations of alleles are possible: AA, Aa, and aa. If AA and aa individuals (homozygotes) show different forms of some trait (phenotypes), and Aa individuals (heterozygotes) show the same phenotype as AA individuals, then allele A is said to dominate or be dominant to or show dominance to allele a, and a is said to be recessive to A.Dominance is not inherent to an allele. It is a relationship between alleles; one allele can be dominant over a second allele, recessive to a third allele, and codominant to a fourth. Also, an allele may be dominant for a particular aspect of phenotype but not for other aspects influenced by the same gene. Dominance differs from epistasis, a relationship in which an allele of one gene affects the expression of another allele at a different gene.